121105445020 has 48 divisors (see below), whose sum is σ = 291859178688. Its totient is φ = 41349565440.

The previous prime is 121105445011. The next prime is 121105445033. The reversal of 121105445020 is 20544501121.

121105445020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1760947 + ... + 1828426.

It is an arithmetic number, because the mean of its divisors is an integer number (6080399556).

Almost surely, 2^121105445020 is an apocalyptic number.

121105445020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121105445020 is an abundant number, since it is smaller than the sum of its proper divisors (170753733668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121105445020 is a wasteful number, since it uses less digits than its factorization.

121105445020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3589630 (or 3589628 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 121105445020 its reverse (20544501121), we get a palindrome (141649946141).

The spelling of 121105445020 in words is "one hundred twenty-one billion, one hundred five million, four hundred forty-five thousand, twenty".